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OEM Carrier Contactor 24V Coil 2-Pole for HB1CJX048000AAAA
Carrier

OEM Carrier Contactor 24V Coil 2-Pole for HB1CJX048000AAAA

SKU: CARRIE-HB1CJX048000AAAA-CONTACTOR-HN51KC024 Brand: Carrier
✓ Guaranteed to fit HB1CJX048000AAAA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 2-Pole Contactor 24V Coil for Model HB1CJX048000AAAA

This is the factory OEM replacement contactor (part number HN51KC024) for the Carrier HB1CJX048000AAAA split-system unit. The contactor is a high-voltage relay controlled by your thermostat's 24V signal — when the thermostat calls for cooling, the contactor closes and sends line voltage to the compressor and condenser fan motor. A failed contactor is one of the most common reasons an air conditioner won't start: the system may hum without engaging, trip a breaker repeatedly, or simply produce no response at all when cooling is demanded.

  • Specs: 2-pole configuration | 24V AC coil voltage | High-amperage load contacts | Factory-matched to Carrier OEM spec for model HB1CJX048000AAAA
  • OEM vs Generic: OEM contactors use silver-alloy contacts rated for exact load cycles specified by Carrier engineering. Generic contactors frequently use lower-grade contact material that pits and welds prematurely, causing hard-start or locked-on compressor failures.
  • Install difficulty: 3/5 — Always disconnect power at both the disconnect box and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, and voltage tester. Photograph all wiring connections before removal. Verify coil voltage with a multimeter before condemning the contactor.
  • Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship the same business day from our climate-controlled parts warehouse.

Compatibility: Designed and factory-specified for the Carrier HB1CJX048000AAAA packaged or split-system unit. Always confirm coil voltage and pole configuration on your existing contactor's label before ordering. Not sure it fits? Our HVAC parts specialists verify fitment at no charge — contact us before you order.

Shipping Information

  • Orders placed before 3PM CST ship same business day
  • Standard delivery: 2-5 business days
  • Express shipping available at checkout
  • Free shipping on orders over $99
  • Tracking number emailed upon shipment

Return Policy

  • 30-day returns on unused parts in original packaging
  • Electrical parts (capacitors, contactors, control boards) are final sale once installed
  • Email info@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Contactor fit my Carrier HB1CJX048000AAAA?
Yes. This is the factory-specified OEM contactor for the Carrier HB1CJX048000AAAA. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.
How do I replace the contactor on my Carrier HB1CJX048000AAAA?
Difficulty: Medium (30–45 min)
Step 1: Turn off breaker. Step 2: Open condensing unit panel. Step 3: Photograph ALL wiring on the contactor. Step 4: Label each wire with tape. Step 5: Disconnect wires and remove old contactor. Step 6: Mount new contactor, reconnect wires matching your photo. Step 7: Restore power and test.
My AC clicks but the compressor won’t turn on. What’s wrong?
Clicking from the outdoor unit without the compressor starting = worn contactor. The contactor sends power to the compressor. When its contacts are pitted, it clicks but can’t make solid contact. Look for: visible pitting/burn marks on the contactor face, intermittent operation, or buzzing.
Is this contactor compatible with Bryant or Payne too?
Many Carrier parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.
Should I use OEM or aftermarket for my Carrier contactor?
OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.
How fast does National HVAC Parts ship?
Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.
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Mike Rivera
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